We all know exercise is beneficial to our health. Then why is it that ultramarathon runners may generate so many free radicals during a race that they can damage the DNA of a significant percentage of their cells? Researchers......

The burning sensation during strenuous exercise may be related to the build-up of lactic acid in our muscles (see Reducing Muscle Fatigue with Citrus), but that’s different than the delayed onset muscle......

We know that inadequate sleeping is associated with changes in diet—people tend to eat worse—but what about the opposite question: Can food affect sleep? In a study on kiwifruit, this seemed possible......